305930747 has 2 divisors, whose sum is σ = 305930748. Its totient is φ = 305930746.

The previous prime is 305930731. The next prime is 305930749. The reversal of 305930747 is 747039503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 305930747 - 2⁴ = 305930731 is a prime.

Together with 305930749, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305930747.

It is not a weakly prime, because it can be changed into another prime (305930749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152965373 + 152965374.

It is an arithmetic number, because the mean of its divisors is an integer number (152965374).

Almost surely, 2^305930747 is an apocalyptic number.

305930747 is a deficient number, since it is larger than the sum of its proper divisors (1).

305930747 is an equidigital number, since it uses as much as digits as its factorization.

305930747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 305930747 is about 17490.8761072738. The cubic root of 305930747 is about 673.8155704384.

The spelling of 305930747 in words is "three hundred five million, nine hundred thirty thousand, seven hundred forty-seven".